Stay-bolt structure for boilers



manner to prevent Patented Feb. 27, 1923.

v 1,447,0ta

' warmers; r immers s;mar arita;1;)

, Y-Bonr'srnuetrunn-ronnornnns. I

Application fi1ed,; Apri1:8,;

Toallwh-omz't may concern v 1 Be it. .known thatil; Jenn-Rooms Finn-NERY, I a citizen of, the United States -anda resident, of Pittsburgh, 1in the county of Ale; j legheny and State of Pennsylvania, have,invented, certain new: ancluseful Improvements in Stay-Bolt Structures,for; Boilers and I do hereby declare thefQllOWingtQl e a run; demandexact? description of the invention, such as will enable Others. Skilledin the art to which .itgapper'tains,-,-tomake and use the same... T

This invention relates to improvements in staybolt structures forboilers,one object of the invention being to provide, in a flexiblestaybolt structure, a simple and efficient mounting for the head of thestaybolt, which may be quickly and accurately positioned within anopening in the boiler sheet so that no portion of the structure willproject beyond the plane of the outer face of the boiler sheet and sothat ready access may be had to the removable cap or closure of themounting.

A further object is to provide a staybolt structure in which themounting for the head of the staybolt shall have a substantial bearingwithin the opening in the boiler sheet and at approximately right anglesto the axis of the bolt and approximately parallel with the planes ofthe faces of the sheet, and to permanently secure the mounting to thewall of the opening in the boiler sheet or to the outer face of thesheet in a possibility of displacement or leakage.

With these and other objects in view, the invention consists in certainnovel features of construction and combinations of parts as hereinafterset forth and pointed out in theclaims.

In the accompanying drawing, Figure 1 is a sectional view illustratingan embodiment of my invention, and Figure 2 is a view of a modification.

In the drawing, the outer sheet of a boiler is represented at 1 and isshown with an opening 2, the inner portion 3 of which is made of lessdiameter than the outer portion so that an annular shoulder 4 is formedand disposed between the planes of the respective faces of the sheet andpreferably nearer the inner face. The annular shoulder 4: is preferablyof such width as to provide a broad seat for a bearing sleeve or memberandlthe,l tts ii ff imei it i l extension 6 ich ent -t l" 7.3 j;PQn innsf. h ,openi sa mtw .bq h

19221 semifin -550,696.:

he. -,b a t gis1e ve .5 s sq'rrop t q id t at its. outen face will bedisposed appreciably; 6Q mwardlyiof the outer-face. ofzthe bOIlGISllBGlJ,

v nd said b an ngsl eie is 0 n1 ,-i ter ?ly j llh" .0 ded surf ce 7-.wh1h-forms .a 1

seat-"for the rounded head 8 (of a staybolt}:

9. The opening inthesleeveoutwardly be r ad. thes at.rorfiomi th ayb lta s i nlarsed.s s nhataf m nsr a s l sa 10 and this enlarged portion ofthe opening I in the sleeve has athreaded Wall to receive an externallythreaded cap or closure 11,- the' the latter being so proportioned thatwhen in position on the bearing sleeve with its inner edge seatedagainst the shoulder 10, (or on a. washer .12 on said shoulder) itsouter face will not ,75 project beyond the plane of the'outer face ofthe boiler sheet but may be flush with the same. v v a When the partsshall have been assembled (either before or after the closure'll shallhave been applied to the bearing sleeve), the bearing sleeve will bepermanently se cured in place by welding, said bearing sleeve, as arule, being permanently secured in place by welding to the wall of theopen ing in the boiler sheet (as indicated at 13),

prior to inserting the bolt.

In the embodiment of my invention shown in Figure '2, theenlargedportion 14 of the opening in the boiler sheet is made shallower1 than in the construction shown in Figure 1 and providesa shoulder 15.The bearing member 16 passes through the opening in the boiler sheet andits enlarged portion 1 17 forms a shoulder 18 to restupon the 5 shoulder15. The enlarged portion 17 of the bearing member projects beyond theouter face of the boiler sheet and is secured: in place by aweld 19between the outer face of the portion 17 of the bearing member and theouter face of theboiler sheet. .The bearing member is provided in itsinner portion with a seat 20 for the head 21 of a staybolt v 22, and aremovable closure 23 isprovided for the bearing member. Having fullydescribed my invention what I claim as new and desire to secure byLetters-Patent, is

1. In a staybolt structure, the combination with a boiler sheet providedwith an opening 110 having portions thereof diifering in diameterwhereby an annular shoulder is formed between the planes of therespective faces of the sheet, of a mounting for a staybolt having partsdifferent in diameter located in said opening, the part of said mountinghaving the greater diameter resting upon said annular shoulder in theboiler sheet and welded to the latter, astaybolt having a head seated insaid mounting, and a removable closure engaging" said mounting over thehead of the staybolt.

2. The combination" with a boiler sheet having an opening and formedtherein with an annular shoulder, of a bearing sleeve mounted on saidshoulder so that its position will be confined between the planes of therespective faces. of the sheet, means permanently uniting said bearingsleeve to the wall of said opening, said bearing sleeve having a seattherein for the head of a staybolt, a staybolt having a head mounted onsaid seat, and a. closure connected with said gearing sleeve over thehead of the stayolt.

3. In a stay bolt structure, the combination with a boiler sheet havingan opening, of a mounting disposed in said opening and located inwardlyof the planes of the respective faces of the boiler sheet, said mountingcomprisin a bearing sleeve welded to the wall of said opening and havingan interior seat for the head of a staybolt, a re-

